CN106115645A - A kind of production method of feed-level calcium biphosphate - Google Patents
A kind of production method of feed-level calcium biphosphate Download PDFInfo
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- CN106115645A CN106115645A CN201610488779.5A CN201610488779A CN106115645A CN 106115645 A CN106115645 A CN 106115645A CN 201610488779 A CN201610488779 A CN 201610488779A CN 106115645 A CN106115645 A CN 106115645A
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- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
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Abstract
The present invention discloses the production method of a kind of feed-level calcium biphosphate, and described production method is: strong phosphoric acid mixed with calcium carbonate, utilizes reacting heat evaporation moisture, crushes and screens and get final product；Described strong phosphoric acid is concentrated in vacuo preparation by phosphoric acid,diluted through two sections, described phosphoric acid,diluted uses liquid extraction to prepare, phosphorus ore used uses acid solution removing alkaline-earth metal ions, described production method uses phosphoric acid by wet process to be directly dry mixed with calcium carbonate, utilize reaction heat can evaporate steam, obtain feed-level calcium biphosphate, it is not necessary to dry again, technique is simple, saves the energy and cost.
Description
Technical field
The present invention relates to Feed Production Technology field, be specifically related to the production method of a kind of feed-level calcium biphosphate.
Background technology
The principal item of feed-grade calcium phosphate salt has tricalcium phosphate, calcium hydrogen phosphate, dalcium biphosphate, all belongs to mineral element
Nutritive additive.Wherein, dalcium biphosphate (MCP) is a kind of excellent high efficiency phosphatic feed additive, phosphorous height, water
Molten rate is high, is phosphorus and the supplement of calcium of animal, has the advantages that biological value is high, is widely used in aquatic animal and makees phosphorus, calcium
Additive, test shows, the aquatic animal utilization rate to phosphorus, is optimal with dalcium biphosphate in synthos, the profit of its phosphorus
98% is reached by rate.
At present feed-level calcium biphosphate product processes has two kinds: a kind of use phosphoric acid defluorination and the carbon with water configuration
The calcium ore pulp that acid calcium powder is made reacts, and generates aqueous higher dalcium biphosphate slip, and the method is referred to as slip producer
Method, owing to the dalcium biphosphate slurry moisture generated is higher, needs higher energy consumption in dry process.Another kind is to use
Thermal phosphoric acid directly reacts with calcium monophosphate product, generates dalcium biphosphate slip, and the slip of dalcium biphosphate is sprayed again
It is dried, prepares feed-level calcium biphosphate product, use thermal phosphoric acid or directly react with calcium monophosphate product, due to use
Thermal phosphoric acid, calcium monophosphate product to be prepared, so production cost is high, deficiency in economic performance, popularization is restricted.
Summary of the invention
In view of this, the application provides the production method of a kind of feed-level calcium biphosphate, and described production method uses wet
Method phosphoric acid is directly dry mixed with calcium carbonate, utilizes reaction heat can evaporate steam, obtains feed-level calcium biphosphate, it is not necessary to carries out
Drying, technique is simple, saves the energy and cost.
For solving above technical problem, the technical scheme that the present invention provides is the producer of a kind of feed-level calcium biphosphate
Method, described production method is: strong phosphoric acid mixed with calcium carbonate, utilizes reacting heat evaporation moisture, crushes and screens and get final product；Described dense
Phosphoric acid is concentrated in vacuo preparation by phosphoric acid,diluted through two sections, and described phosphoric acid,diluted uses liquid extraction to prepare, and phosphorus ore used uses acid solution
Removing alkaline-earth metal ions.
Preferably, H in described strong phosphoric acid3PO4Mass percent be 85%.
Preferably, the preparation process of described strong phosphoric acid is:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent be 42 48%
Time, pressure-filtering deslagging, obtain A phosphoric acid；
(2) two-stage nitration is concentrated in vacuo: adds kieselguhr in step (1) gained A phosphoric acid and carries out defluorinate, slagging-off, at vacuum bar
Carry out under part being concentrated into P2O5Mass percent when being 56 62%, filter, obtain strong phosphoric acid.
Being more highly preferred to, (1) one section of vacuum being concentrated in vacuo of described step is 8 15kPa, and thickening temperature is 60 80
℃；The vacuum that described step (2) two-stage nitration is concentrated in vacuo is 7 9kPa, and thickening temperature is 80 90 DEG C.
Being more highly preferred to, (1) one section of vacuum being concentrated in vacuo of described step is 12kPa, and thickening temperature is 76 DEG C；Described
The vacuum that step (2) two-stage nitration is concentrated in vacuo is 8kPa, and thickening temperature is 85 DEG C.
It is more highly preferred to, during described step (2) two-stage nitration is concentrated in vacuo, the percent mass of addition kieselguhr defluorinate to fluorion
Number is less than 0.2%.
Preferably, the described method that strong phosphoric acid mixed with calcium carbonate is: after calcium carbonate is sent into mixer, be uniformly added into
Strong phosphoric acid, described strong phosphoric acid stirs at least 10 minutes after adding, blowing；Described strong phosphoric acid and the weight ratio of described calcium carbonate
Example is (1 10): 1.
Preferably, described calcium carbonate, before mixing with described strong phosphoric acid, is initially charged in pulverizer and pulverizes, and enters and pulverizes
The block footpath of the calcium carbonate of machine is not more than 210mm, and the Carbonate Particle Size after pulverizing is 100 150 mesh.
Being more highly preferred to, the Carbonate Particle Size after described pulverizing is 120 mesh.
Preferably, when described phosphorus ore uses acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions is potassium ion, sodium
Ion, is removed to potassium ion mass percent and is less than 0.01%, and sodium ion mass percent is less than 0.01%.
In technical scheme, for the phosphoric acid,diluted concentrated, using liquid extraction method to prepare, phosphorus ore used is first adopted
Alkaline-earth metal ions therein is removed, it is to avoid phosphoric acid,diluted fluorine silicon hydrochlorate when concentrating separates out, it is impossible to filters and separates with dilute sulfuric acid.
Using two sections of methods being concentrated in vacuo when phosphoric acid,diluted concentrates, dilute sulfuric acid is concentrated into containing P when being concentrated in vacuo by one section2O5Quality hundred
Proportion by subtraction is 42 48%, adds kieselguhr and carries out two-stage nitration defluorinate, slagging-off, be concentrated in vacuo to P after pressure-filtering deslagging2O5Percent mass
Ratio is 56 62%, namely 85% strong phosphoric acid, then filters.Phosphoric acid after concentrating directly is dry mixed with calcium carbonate, profit
With reaction heat by water evaporation, i.e. can get qualified biphosphate calcium product, i.e. obtain feed grade di(2-ethylhexyl)phosphate through crushing and screening
Hydrogen calcium product.
Compared with prior art, its detailed description is as follows for the application: technical scheme provides a kind of feed grade phosphorus
The production method of acid dihydride calcium, directly uses strong phosphoric acid and calcium carbonate dry pigmentation to produce, and strong phosphoric acid is to use liquid extraction
The phosphoric acid,diluted of gained concentrates gained, in prior art, the phosphoric acid,diluted of liquid extraction gained, place can not be concentrated in vacuo by two sections
Reason obtains the strong phosphoric acid that mass percent is 85%；Existing 85% strong phosphoric acid is generally by full-boiled process gained, but full-boiled process phosphorus
Acid mode operation is more, relatively costly, and consumes energy.The application scheme uses wet method to prepare phosphoric acid,diluted, first by the alkali in phosphorus ore
Earthmetal cations removes, and at this, available two sections of basis is concentrated in vacuo, defluorinate, and obtains 85% phosphoric acid, overcomes existing wet method
Phosphoric acid cannot use two-stage vacuum to be concentrated to give the defect of 85% strong phosphoric acid；Therefore, it is possible to carry out 85% strong phosphoric acid directly and carbon
Sour calcium is dry mixed, and utilizes the i.e. available required dalcium biphosphate of reacting heat evaporation steam, without additionally drying, energy-conservation and saving
Cost.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with specific embodiment pair
The present invention is described in further detail.
Embodiment 1
The production method of a kind of feed-level calcium biphosphate described in the present embodiment, described production method is: by H3PO4's
Mass percent be 85% strong phosphoric acid mix with calcium carbonate, utilize reacting heat evaporation moisture, crush and screen and get final product, concrete steps
Including: liquid extraction obtains phosphoric acid,diluted, phosphoric acid,diluted two sections be concentrated in vacuo strong phosphoric acid, strong phosphoric acid and calcium carbonate are dry mixed to obtain biphosphate
Calcium.
Liquid extraction obtains phosphoric acid,diluted: phosphorus ore used uses acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions
For potassium ion, sodium ion, being removed to potassium ion mass percent and be less than 0.01%, sodium ion mass percent is less than 0.01%.
Phosphoric acid,diluted two sections is concentrated in vacuo to obtain strong phosphoric acid, including:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent be 42 48%
Time, pressure-filtering deslagging, obtain A phosphoric acid, the vacuum being wherein concentrated in vacuo is 12kPa, and thickening temperature is 76 DEG C；
(2) two-stage nitration is concentrated in vacuo: add kieselguhr defluorinate in step (1) gained A phosphoric acid to the percent mass of fluorion
Number, less than 0.2%, removes the gred, carries out under vacuum being concentrated into P2O5Mass percent when being 56 62%, filter, to obtain final product
Strong phosphoric acid, the vacuum being concentrated in vacuo is 8kPa, and thickening temperature is 85 DEG C.
Strong phosphoric acid and calcium carbonate are dry mixed to obtain dalcium biphosphate: after calcium carbonate is sent into mixer, be uniformly added into strong phosphoric acid, institute
State and stir at least 10 minutes after strong phosphoric acid adds, blowing, then carry out crushing and screening and i.e. obtain feed-level calcium biphosphate product.Described
Strong phosphoric acid is 5:1 with the part by weight of described calcium carbonate；Described calcium carbonate, before mixing with described strong phosphoric acid, is initially charged pulverizer
In pulverize, the block footpath of calcium carbonate entering pulverizer is not more than 210mm, and the Carbonate Particle Size after pulverizing is 120 mesh.
The quality index of products obtained therefrom is shown in Table 1.
Table 1 embodiment product quality indicator
Embodiment 2
The production method of a kind of feed-level calcium biphosphate described in the present embodiment, described production method is: by H3PO4's
Mass percent be 85% strong phosphoric acid mix with calcium carbonate, utilize reacting heat evaporation moisture, crush and screen and get final product, concrete steps
Including: liquid extraction obtains phosphoric acid,diluted, phosphoric acid,diluted two sections be concentrated in vacuo strong phosphoric acid, strong phosphoric acid and calcium carbonate are dry mixed to obtain biphosphate
Calcium.
Liquid extraction obtains phosphoric acid,diluted: phosphorus ore used uses acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions
For potassium ion, sodium ion, being removed to potassium ion mass percent and be less than 0.01%, sodium ion mass percent is less than 0.01%.
Phosphoric acid,diluted two sections is concentrated in vacuo to obtain strong phosphoric acid, including:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent be 42 48%
Time, pressure-filtering deslagging, obtain A phosphoric acid, the vacuum being wherein concentrated in vacuo is 8kPa, and thickening temperature is 60 DEG C；
(2) two-stage nitration is concentrated in vacuo: add kieselguhr defluorinate in step (1) gained A phosphoric acid to the percent mass of fluorion
Number, less than 0.2%, removes the gred, carries out under vacuum being concentrated into P2O5Mass percent when being 56 62%, filter, to obtain final product
Strong phosphoric acid, the 7kPa being concentrated in vacuo, thickening temperature is 80 DEG C.
Strong phosphoric acid and calcium carbonate are dry mixed to obtain dalcium biphosphate: after calcium carbonate is sent into mixer, be uniformly added into strong phosphoric acid, institute
State and stir at least 10 minutes after strong phosphoric acid adds, blowing, then carry out crushing and screening and i.e. obtain feed-level calcium biphosphate product.Described
Strong phosphoric acid is 1:1 with the part by weight of described calcium carbonate；Described calcium carbonate, before mixing with described strong phosphoric acid, is initially charged pulverizer
In pulverize, the block footpath of calcium carbonate entering pulverizer is not more than 210mm, and the Carbonate Particle Size after pulverizing is 120 mesh.
The quality index of products obtained therefrom is shown in Table 2.
Table 2 embodiment product quality indicator
Embodiment 3
The production method of a kind of feed-level calcium biphosphate described in the present embodiment, described production method is: by H3PO4's
Mass percent be 85% strong phosphoric acid mix with calcium carbonate, utilize reacting heat evaporation moisture, crush and screen and get final product, concrete steps
Including: liquid extraction obtains phosphoric acid,diluted, phosphoric acid,diluted two sections be concentrated in vacuo strong phosphoric acid, strong phosphoric acid and calcium carbonate are dry mixed to obtain biphosphate
Calcium.
Liquid extraction obtains phosphoric acid,diluted: phosphorus ore used uses acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions
For potassium ion, sodium ion, being removed to potassium ion mass percent and be less than 0.01%, sodium ion mass percent is less than 0.01%.
Phosphoric acid,diluted two sections is concentrated in vacuo to obtain strong phosphoric acid, including:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent be 42 48%
Time, pressure-filtering deslagging, obtain A phosphoric acid, the vacuum being wherein concentrated in vacuo is 15kPa, and thickening temperature is 80 DEG C；
(2) two-stage nitration is concentrated in vacuo: add kieselguhr defluorinate in step (1) gained A phosphoric acid to the percent mass of fluorion
Number, less than 0.2%, removes the gred, carries out under vacuum being concentrated into P2O5Mass percent when being 56 62%, filter, to obtain final product
Strong phosphoric acid, the 9kPa being concentrated in vacuo, thickening temperature is 90 DEG C.
Strong phosphoric acid and calcium carbonate are dry mixed to obtain dalcium biphosphate: after calcium carbonate is sent into mixer, be uniformly added into strong phosphoric acid, institute
State and stir at least 10 minutes after strong phosphoric acid adds, blowing, then carry out crushing and screening and i.e. obtain feed-level calcium biphosphate product.Described
Strong phosphoric acid is 10:1 with the part by weight of described calcium carbonate；Described calcium carbonate, before mixing with described strong phosphoric acid, is initially charged pulverizing
Pulverizing in machine, the block footpath of the calcium carbonate entering pulverizer is not more than 210mm, and the Carbonate Particle Size after pulverizing is 120 mesh.
The quality index of products obtained therefrom is shown in Table 3.
Table 3 embodiment product quality indicator
Embodiment 4
The production method of a kind of feed-level calcium biphosphate described in the present embodiment, described production method is: by H3PO4's
Mass percent be 85% strong phosphoric acid mix with calcium carbonate, utilize reacting heat evaporation moisture, crush and screen and get final product, concrete steps
Including: liquid extraction obtains phosphoric acid,diluted, phosphoric acid,diluted two sections be concentrated in vacuo strong phosphoric acid, strong phosphoric acid and calcium carbonate are dry mixed to obtain biphosphate
Calcium.
Liquid extraction obtains phosphoric acid,diluted: phosphorus ore used uses acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions
For potassium ion, sodium ion, being removed to potassium ion mass percent and be less than 0.01%, sodium ion mass percent is less than 0.01%.
Phosphoric acid,diluted two sections is concentrated in vacuo to obtain strong phosphoric acid, including:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent be 42 48%
Time, pressure-filtering deslagging, obtain A phosphoric acid, the 12kPa being wherein concentrated in vacuo, thickening temperature is 76 DEG C；
(2) two-stage nitration is concentrated in vacuo: add kieselguhr defluorinate in step (1) gained A phosphoric acid to the percent mass of fluorion
Number, less than 0.2%, removes the gred, carries out under vacuum being concentrated into P2O5Mass percent when being 56 62%, filter, to obtain final product
Strong phosphoric acid, the 9kPa being concentrated in vacuo, thickening temperature is 90 DEG C.
Strong phosphoric acid and calcium carbonate are dry mixed to obtain dalcium biphosphate: after calcium carbonate is sent into mixer, be uniformly added into strong phosphoric acid, institute
State and stir at least 10 minutes after strong phosphoric acid adds, blowing, then carry out crushing and screening and i.e. obtain feed-level calcium biphosphate product.Described
Strong phosphoric acid is 8:1 with the part by weight of described calcium carbonate；Described calcium carbonate, before mixing with described strong phosphoric acid, is initially charged pulverizer
In pulverize, the block footpath of calcium carbonate entering pulverizer is not more than 210mm, and the Carbonate Particle Size after pulverizing is 120 mesh.
The quality index of products obtained therefrom is shown in Table 4.
Table 4 embodiment product quality indicator
Embodiment 5
The production method of a kind of feed-level calcium biphosphate described in the present embodiment, described production method is: by H3PO4's
Mass percent be 85% strong phosphoric acid mix with calcium carbonate, utilize reacting heat evaporation moisture, crush and screen and get final product, concrete steps
Including: liquid extraction obtains phosphoric acid,diluted, phosphoric acid,diluted two sections be concentrated in vacuo strong phosphoric acid, strong phosphoric acid and calcium carbonate are dry mixed to obtain biphosphate
Calcium.
Liquid extraction obtains phosphoric acid,diluted: phosphorus ore used uses acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions
For potassium ion, sodium ion, being removed to potassium ion mass percent and be less than 0.01%, sodium ion mass percent is less than 0.01%.
Phosphoric acid,diluted two sections is concentrated in vacuo to obtain strong phosphoric acid, including:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent be 42 48%
Time, pressure-filtering deslagging, obtain A phosphoric acid, the 15kPa being wherein concentrated in vacuo, thickening temperature is 80 DEG C；
(2) two-stage nitration is concentrated in vacuo: add kieselguhr defluorinate in step (1) gained A phosphoric acid to the percent mass of fluorion
Number, less than 0.2%, removes the gred, carries out under vacuum being concentrated into P2O5Mass percent when being 56 62%, filter, to obtain final product
Strong phosphoric acid, the vacuum being concentrated in vacuo is 8kPa, and thickening temperature is 85 DEG C.
Strong phosphoric acid and calcium carbonate are dry mixed to obtain dalcium biphosphate: after calcium carbonate is sent into mixer, be uniformly added into strong phosphoric acid, institute
State and stir at least 10 minutes after strong phosphoric acid adds, blowing, then carry out crushing and screening and i.e. obtain feed-level calcium biphosphate product.Described
Strong phosphoric acid is 6:1 with the part by weight of described calcium carbonate；Described calcium carbonate, before mixing with described strong phosphoric acid, is initially charged pulverizer
In pulverize, the block footpath of calcium carbonate entering pulverizer is not more than 210mm, and the Carbonate Particle Size after pulverizing is 120 mesh.
The quality index of products obtained therefrom is shown in Table 5.
Table 5 embodiment product quality indicator
The dalcium biphosphate product quality that the method for above-described embodiment 15 produces meets table 6 standard GB/T/T22548-
The index of 2008.
Table 6GB/T22548-2008 index
| Project | Index |
| Total phosphorus (P) content/% >= | 22.0 |
| Water-soluble phosphorus (P) content/% >= | 20.0 |
| Calcium (Ca) content/% >= | 13.0 |
| Fluorine (F) content/%≤ | 0.18 |
| Arsenic (As) content/%≤ | 0.003 |
| Lead (Pb) content/%≤ | 0.003 |
| Cadmium (Cd) content/%≤ | 0.001 |
| Fineness (powdery passes through 0.5mm testing sieve)/% >= | 95 |
As can be seen from the above data, the feed grade phosphorus that the production method of herein described feed-level calcium biphosphate obtains
The quality of acid dihydride calcium product is better than the index of GB/T22548-2008, and it produces relative to existing feed-level calcium biphosphate
Method, the production method of the application uses liquid extraction phosphoric acid and is directly condensed into the strong phosphoric acid of 85%, and cost is lower, power consumption
Less, simultaneously by the processing mode of the removing alkaline-earth metal ions of the phosphoric acid,diluted of liquid extraction, existing phosphoric acid by wet process is overcome
Two-stage vacuum cannot be used to be concentrated to give the defect of 85% strong phosphoric acid；85% strong phosphoric acid and calcium carbonate is used to carry out dry pigmentation production
I.e. can get feed-level calcium biphosphate product, it is not necessary to baking operation, energy-conservation reduction cost.
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred implementation is not construed as
The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (10)
1. the production method of a feed-level calcium biphosphate, it is characterised in that described production method is: by strong phosphoric acid and carbonic acid
Calcium mixes, and utilizes reacting heat evaporation moisture, crushes and screens and get final product；Described strong phosphoric acid is concentrated in vacuo preparation by phosphoric acid,diluted through two sections,
Described phosphoric acid,diluted uses liquid extraction to prepare, and phosphorus ore used uses acid solution removing alkaline-earth metal ions.
The production method of a kind of feed-level calcium biphosphate the most according to claim 1, it is characterised in that described strong phosphoric acid
Middle H3PO4Mass percent be 85%.
The production method of a kind of feed-level calcium biphosphate the most according to claim 1, it is characterised in that described strong phosphoric acid
Preparation process be:
(1) one section is concentrated in vacuo: phosphoric acid,diluted is concentrated into P under vacuum2O5Mass percent when being 42 48%, pressure
Filter slag, obtain A phosphoric acid；
(2) two-stage nitration is concentrated in vacuo: adds kieselguhr in step (1) gained A phosphoric acid and carries out defluorinate, slagging-off, under vacuum
Carry out being concentrated into P2O5Mass percent when being 56 62%, filter, obtain strong phosphoric acid.
The production method of a kind of feed-level calcium biphosphate the most according to claim 3, it is characterised in that described step
(1) one section of vacuum being concentrated in vacuo is 8 15kPa, and thickening temperature is 60 80 DEG C；Described step (2) two-stage nitration is concentrated in vacuo
Vacuum be 7 9kPa, thickening temperature is 80 90 DEG C.
The production method of a kind of feed-level calcium biphosphate the most according to claim 4, it is characterised in that described step
(1) one section of vacuum being concentrated in vacuo is 12kPa, and thickening temperature is 76 DEG C；The vacuum that described step (2) two-stage nitration is concentrated in vacuo
For 8kPa, thickening temperature is 85 DEG C.
The production method of a kind of feed-level calcium biphosphate the most according to claim 3, it is characterised in that described step
(2), during two-stage nitration is concentrated in vacuo, the mass percent of addition kieselguhr defluorinate to fluorion is less than 0.2%.
The production method of a kind of feed-level calcium biphosphate the most according to claim 1, it is characterised in that described by dense phosphorus
The method that acid mixes with calcium carbonate is: after calcium carbonate is sent into mixer, being uniformly added into strong phosphoric acid, described strong phosphoric acid is stirred after adding
Mix at least 10 minutes, blowing；Described strong phosphoric acid is (1 10) with the part by weight of described calcium carbonate: 1.
The production method of a kind of feed-level calcium biphosphate the most according to claim 1, it is characterised in that described calcium carbonate
Before mixing with described strong phosphoric acid, being initially charged in pulverizer and pulverize, the block footpath of the calcium carbonate entering pulverizer is not more than
210mm, the Carbonate Particle Size after pulverizing is 100 150 mesh.
The production method of a kind of feed-level calcium biphosphate the most according to claim 8, it is characterised in that after described pulverizing
Carbonate Particle Size be 120 mesh.
The production method of a kind of feed-level calcium biphosphate the most according to claim 1, it is characterised in that described phosphorus ore
When using acid solution removing alkaline-earth metal ions, described alkaline-earth metal ions is potassium ion, sodium ion, is removed to potassium ion quality hundred
Mark is less than 0.01%, and sodium ion mass percent is less than 0.01%.
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| CN108455545A (en) * | 2018-02-01 | 2018-08-28 | 连云港西都生化有限公司 | A kind of preparation method of calcium dihydrogen phosphate |
| CN108455545B (en) * | 2018-02-01 | 2021-09-10 | 连云港西都食品配料有限公司 | Preparation method of monocalcium phosphate |
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